Epachthosaurus
Epachthosaurus was a genus of titanosaurian sauropod dinosaur, belonging to Lithostrotia, from the Late Cretaceous of Central and Northern Patagonia in South America.

Gastón Cuello · CC BY-SA 3.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- LithostrotiaPBDB
- Diet
- herbivorePBDB, for Sauropoda
- Life habit
- ground dwelling, gregariousPBDB, for Sauropoda
- Motility
- actively mobilePBDB, for Sauropoda
- Environment
- terrestrialPBDB, for Sauropoda
Time the record covers
At most 11 million years on record.
Every occurrence read is dated to somewhere between 100.5 Mya and 89.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
3 occurrences of Epachthosaurus on record, most of them in the Late Cretaceous. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
3 occurrences- Late Cretaceous100%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
1 formation
- Bajo Barreal Formation · Chubut Group3
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The named rock units Epachthosaurus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Epachthosaurus and its relatives
Late CretaceousWhere Epachthosaurus and its relatives were recorded in the Late Cretaceous.
Found in the same rock
11 taxa- Abelisauridae2 sites
- Anura1 site
- Bonapartemys bajobarrealis1 site
- Crocodylia1 site
- Osteichthyes1 site
- Prochelidella argentinae1 site
- Pterosauria1 site
- Rebbachisauridae1 site
- Sauropoda1 site
- Titanosauria1 site
- Xenotarsosaurus bonapartei1 site
The Paleobiology Database records 3 sites for Epachthosaurus, and this reads all of them. The number is how many of those sites it was catalogued from too.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
3 references- Materiales asignables a Epachthosaurus Powell, 1990 (Sauropoda: Titanosauria), de la Formación Bajo Barreal, Cretácico Superior, Chubut, Argentina [Materials assignable to Epachthosaurus Powell, 1990 (Sauropoda: Titanosauria), from the Bajo Barreal Formation, Upper Cretaceous, Chubut, Argentina]1
- An articulated specimen of the basal titanosaurian (Dinosauria: Sauropoda) Epachthosaurus sciuttoi from the early Late Cretaceous Bajo Barreal Formation of Chubut province, Argentina1
- Epachthosaurus sciuttoi (gen. et sp. nov.), un dinosaurio sauropodo del Cretácico de Patagonia (Provincia de Chubut, Argentina) [Epachthosaurus sciuttoi (gen. et sp. nov.), a sauropod dinosaur from the Cretaceous of Patagonia (Chubut province, Argentina)]1
Each of the 3 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Epachthosaurus
- Source
- Wikipedia/Commons
- Credit
- Gastón Cuello
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Epachthosaurus was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itLithostrotia through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Powell 1990